In Phase 2, the test structure is a two-story, two bays by three bays gravity frame with each story height of 3.3 m. The test bay (at the center of the building) measures 6.1 m by 9.1 m and will be hydraulically loaded to service gravity loads. The fire will be produced by natural gas fueled burners with a total maximum capacity of 16 megawatts and confined to the test bay using enclosure walls. Columns will be protected against fire exposure. The first test will be a standard fire test to generate baseline data for current U.S. practice. For later test series, a test fire designed using NIST’s Fire Dynamics Simulator (FDS) will be used to simulate a post-flashover fire followed by cool-down. The measurements will include the fire heat release rates, gas temperatures, and heat fluxes, as well as displacements, forces, strains and temperatures in the composite floor systems.
Time lapse video of the casting of a composite concrete-steel floor slab in the National Fire Research Laboratory on June 4th, 2019. The video shows a perspective from the laboratory floor. [no audio]
- Choe, L.Y.; Ramesh, S.; Seif, M. S.; Hoehler, M. S.; Grosshandler, W. L.; Gross, J. L.; Bundy, M. F. Fire Performance of Long-Span Composite Beams with Gravity Connections, SiF18 - The 10th International Conference on Structures in Fire, June 6-8, 2018, Blefast, UK.
- Ramesh, S.; Choe, L.Y.; Hoehler, M. S.; Grosshandler, W. L.; Gross, J. L. Design and Construction of Long-Span Composite Beam Specimens for Large Structural-Fire Tests, Structures Congress 2018, April 19-21, 2018, Fort Worth, USA.
- Choe, L.Y.; Ramesh, S.; Hoehler, M. S.; Gross, J. L. Experimental Study on Long-Span Composite Floor Beams Subject to Fire: Baseline Data at Ambient Temperature, Structures Congress 2018, April 19-21, 2018, Fort Worth, USA.